Which element has a -2 charge?
magnesium

sulfur

sodium

hydrogen

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

What property of an object determines its inertia?

Photons with the highest energy have the longest period